About ImageMaterialProperty depth problem

how are you all~

As the title says, i have a problem.

I’m building a road on cesium these days, builing a road sign.

i’m using the wall of entity. It is as follows.

Looks good. be fit for my purpose.
i used a circular .png image file with alpha channel at this time. and then write a code like blow


front side is good. but problem is… turning back side like blow.


As you can see, there is a problem with depth.

is there any advice on this situation?

on the other hand, there is no problem if transparent = false .


Any help is appreciated.

Hi, It would be great if you create a sandcastle example to help you on solving issue.

  • Regards